4 # This file is subject to the terms and conditions of the GNU General Public
5 # License. See the file "COPYING" in the main directory of this archive
8 # Copyright (C) 1994 by Linus Torvalds
13 LDFLAGS_vmlinux := -static -N #-relax
14 cflags-y := -pipe -mno-fp-regs -ffixed-8
16 # Determine if we can use the BWX instructions with GAS.
17 old_gas := $(shell if $(AS) --version 2>&1 | grep 'version 2.7' > /dev/null; then echo y; else echo n; fi)
20 $(error The assembler '$(AS)' does not support the BWX instruction)
23 # Determine if GCC understands the -mcpu= option.
24 have_mcpu := $(shell if $(CC) -mcpu=ev5 -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo y; else echo n; fi)
26 have_mcpu_pca56 := $(shell if $(CC) -mcpu=pca56 -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo y; else echo n; fi)
28 have_mcpu_ev6 := $(shell if $(CC) -mcpu=ev6 -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo y; else echo n; fi)
30 have_mcpu_ev67 := $(shell if $(CC) -mcpu=ev67 -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo y; else echo n; fi)
32 have_msmall_data := $(shell if $(CC) -msmall-data -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo y; else echo n; fi)
34 cflags-$(have_msmall_data) += -msmall-data
36 # Turn on the proper cpu optimizations.
39 # If GENERIC, make sure to turn off any instruction set extensions that
40 # the host compiler might have on by default. Given that EV4 and EV5
41 # have the same instruction set, prefer EV5 because an EV5 schedule is
42 # more likely to keep an EV4 processor busy than vice-versa.
43 ifeq ($(CONFIG_ALPHA_GENERIC),y)
47 ifeq ($(mcpu_done)$(CONFIG_ALPHA_SX164)$(have_mcpu_pca56),nyy)
51 ifeq ($(mcpu_done)$(CONFIG_ALPHA_POLARIS)$(have_mcpu_pca56),nyy)
55 ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV4),ny)
59 ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV56),ny)
63 ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV5),ny)
67 ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV67)$(have_mcpu_ev67),nyy)
71 ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV6),ny)
72 ifeq ($(have_mcpu_ev6),y)
75 ifeq ($(have_mcpu_pca56),y)
83 cflags-$(mcpu_done) += -mcpu=$(mcpu)
87 # For TSUNAMI, we must have the assembler not emulate our instructions.
88 # The same is true for IRONGATE, POLARIS, PYXIS.
89 # BWX is most important, but we don't really want any emulation ever.
90 CFLAGS += $(cflags-y) -Wa,-mev6
92 head-y := arch/alpha/kernel/head.o
94 core-y += arch/alpha/kernel/ arch/alpha/mm/
95 core-$(CONFIG_MATHEMU) += arch/alpha/math-emu/
96 drivers-$(CONFIG_OPROFILE) += arch/alpha/oprofile/
97 libs-y += arch/alpha/lib/
99 # export what is needed by arch/alpha/boot/Makefile
100 LIBS_Y := $(patsubst %/, %/lib.a, $(libs-y))
103 boot := arch/alpha/boot
105 #Default target when executing make with no arguments
106 all boot: $(boot)/vmlinux.gz
108 $(boot)/vmlinux.gz: vmlinux
109 $(Q)$(MAKE) -f scripts/Makefile.build obj=$(boot) $@
111 bootimage bootpfile bootpzfile: vmlinux
112 $(Q)$(MAKE) -f scripts/Makefile.build obj=$(boot) $(boot)/$@
115 prepare: include/asm-$(ARCH)/asm_offsets.h
117 arch/$(ARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
118 include/config/MARKER
120 include/asm-$(ARCH)/asm_offsets.h: arch/$(ARCH)/kernel/asm-offsets.s
121 $(call filechk,gen-asm-offsets)
124 $(Q)$(MAKE) -f scripts/Makefile.clean obj=$(boot)
126 CLEAN_FILES += include/asm-$(ARCH)/asm_offsets.h
129 echo '* boot - Compressed kernel image (arch/alpha/boot/vmlinux.gz)'
130 echo ' bootimage - SRM bootable image (arch/alpha/boot/bootimage)'
131 echo ' bootpfile - BOOTP bootable image (arch/alpha/boot/bootpfile)'
132 echo ' bootpzfile - compressed kernel BOOTP image (arch/alpha/boot/bootpzfile)'